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Detailed entries for one subject from the INDEX TO HOW TO DO IT INFORMATION.
Click on a see also (sa) or tracing (xx) to view detailed entries about a related subject.
The entries are in alphabetical order by magazine name and then in chronological sequence.
To obtain a copy of any magazine article contact your local public library or the publisher.

TELEPHONE RINGER
x   RINGER (TELEPHONE)
xx   TELEPHONE

Telephone ring-detection circuit is useful for detection of high-voltage signals and conversion to common logic levels.
BYTE Dec 1983 (v.8#12) pg. 558

A musical telephone bell. Personalize the sound of your telephone ring by using a chip which plays 25 different tunes. Est. cost: $49.
BYTE Jul 1984 (v.9#7) pg. 125
Correction BYTE Sep 1984 (v.9#10) pg. 3
Correction BYTE Nov 1984 (v.9#12) pg. 34

Circuit will signal the arrival of a phone call by sensing the voltage drop across the phone line. Use for remote signaling or to "hear" incoming calls before the phone rings.
CQ. THE RADIO AMATEUR'S JOURNAL Apr 1979 (v.35#4) pg. 103

Circuit for three telephone accessories: (1) simple "ring" indicator (2) relay operated "ring" indicator (3) privacy switch.
CQ. THE RADIO AMATEUR'S JOURNAL Jul 1980 (v.36#7) pg. 81

Phone sentry. Defend yourself from nusiance calls with this call screener. Allows you to set a minimum number of times that a telephone caller must let the phone ring before the incoming call actually rings the telephone. Est. cost: $30.
ELECTRONICS HOBBYISTS HANDBOOK 1989 pg. 56

Telephone ring converter alters the sound of a phone so you can distinguish between multiple phones. Also can be used as a remote ringer (annunciator).
ELECTRONICS HOBBYISTS HANDBOOK 1993 pg. 55

Telephone bell extension.
ELECTRONICS ILLUSTRATED Nov 1963 (v.6#6) pg. 84

Talking telephone ringer. Replace a ringing with a personalized message, music, or other sounds. Programming can change the audio for each successive ring (up to 5).
ELECTRONICS NOW May 1993 (v.64#5) pg. 41

Amplifier circuit to boost ring level of a telephone bell.
ELECTRONICS NOW Sep 1993 (v.64#9) pg. 12
Added Info ELECTRONICS NOW Feb 1994 (v.65#2) pg. 16
Added Info ELECTRONICS NOW Aug 1994 (v.65#8) pg. 15 (Improved circuit)
Correction ELECTRONICS NOW Nov 1994 (v.65#11) pg. 8 (Correct improved circuit)
Added Info ELECTRONICS NOW Apr 1995 (v.66#4) pg. 12

Build this distinctive ring decoder which allows the phone company to assign up to four different phone numbers to a single line.
ELECTRONICS NOW Mar 1994 (v.65#3) pg. 43

Ring-A-Thing. A loud doorbell, powered by rechargeable batteries, will sound a loud ring at a remote location whenever the telephone rings. Involves connecting two wires to the telephone line.
ELEMENTARY ELECTRONICS Mar-Apr 1978 (v.18#2) pg. 65

Simplex-a-thing. Remote signaling device alerts you to incoming phone calls by means of a buzzer or blinking light. Unit is not wired into phone circuit.
ELEMENTARY ELECTRONICS Jan-Feb 1980 (v.20#1) pg. 28

Tone-ringer. Replace the standard telephone ringer with this pleasing two-tone warble caller. May also be used in a remote location.
HANDS-ON ELECTRONICS Summer 1984 (v.2#1) pg. 39

Musical ringer. Telephone ringer replaces the standard ringer with your choice (switch selectable) of 26 popular melodies.
HANDS-ON ELECTRONICS Fall 1984 (v.2#2) pg. 58
Correction HANDS-ON ELECTRONICS Spring 1985 (v.2#4) pg. 4

Extension (remote) telephone ringer.
HANDS-ON ELECTRONICS Winter 1985 (v.2#3) pg. 65

Telephone projects for the hobbyist. (1) Tele-Guard allows you to detect a listening device (bug) or an open telephone extension. (2) Telephone hold button. (3) Telephone melody ringer.
HANDS-ON ELECTRONICS Sep-Oct 1986 (v.3#5) pg. 60
Correction HANDS-ON ELECTRONICS Jan 1987 (v.4#1) pg. 4

Circuits for use with your telephone. (1) Replace the ringer with a blinking 117-VAC lamp. (2) Line-activated solid-state switch activates a control or external circuit each time a phone on the same line is taken off-hook. (3) In-use indicator lights an LED. (4) "Tap" to amplify or record a telephone call.
HANDS-ON ELECTRONICS Sep-Oct 1986 (v.3#5) pg. 88

Circuit for a sound-operated switch that will sense the ringing of a telephone and translate this to a flashing lamp.
HANDS-ON ELECTRONICS Nov 1986 (v.3#6) pg. 32

Circuit to cause a lamp to flash whenever the telephone rings.
HANDS-ON ELECTRONICS Dec 1986 (v.3#7) pg. 22

Circuit for an electronic telephone ringer has three sound levels.
HANDS-ON ELECTRONICS Feb 1987 (v.4#2) pg. 22

Phone Sentry allows the user to program the number of rings an incoming call must generate before your telephone is allowed to ring. Est. cost: $24.
HANDS-ON ELECTRONICS Sep 1987 (v.4#9) pg. 78

Telephone alarm sounds a remote bell or horn to let you know the phone is ringing. Est. cost: $9.
MODERN ELECTRONICS [1] Jul 1978 (v.1#5) pg. 56

Circuit to provide for remote ringing of a bell as soon as the circuit is activated by an incoming call. Also can eliminate the occasional non-ringing of the telephone itself. Est. cost: $9.
MODERN ELECTRONICS [1] Sep 1978 (v.1#7) pg. 39

Mello-Phone: The super musical telephone ringer. Build-it-yourself project substitutes up to 200 selectable musical tunes of extended length for a standard telephone ringer. Est. cost: $44.
MODERN ELECTRONICS [2] Nov 1985 (v.2#5) pg. 36

Automatic telephone ringer silencer is activated when the room lights go off and turns back on when the lights go on. Ideal for a bedroom telephone.
MODERN ELECTRONICS [2] Nov 1986 (v.3#11) pg. 33

Solid-state telephone bell replacement and stand-alone incoming-call annunciator.
MODERN ELECTRONICS [2] Mar 1987 (v.4#3) pg. 48

Automatic telephone flasher. Add-on accessory gives you a visual indication of an incoming telephone call.
MODERN ELECTRONICS [2] Mar 1988 (v.5#3) pg. 40

Telephone ringer circuits built around Motorola's MC34012 family of tone-ringer ICs.
MODERN ELECTRONICS [2] May 1988 (v.5#5) pg. 67

Wireless remote ringer. Works with an FM radio to remotely signal when your telephone rings.
MODERN ELECTRONICS [2] Aug 1988 (v.5#8) pg. 30

Phone-ring visual indicator. Lighting up a lamp when a phone call comes in is helpful for hearing-impaired, bedrooms, etc.
MODERN ELECTRONICS [2] Oct 1988 (v.5#10) pg. 32
Correction MODERN ELECTRONICS [2] Jan 1989 (v.6#1) pg. 7

High-tech telephone ringer sounds a more attention-getting, yet pleasant-sounding British-style phone signaling sequence.
MODERN ELECTRONICS [2] Nov 1989 (v.6#11) pg. 38

Yuletide telephone ringer. Simple add-on device sounds "Deck the Halls" to signal an incoming call.
MODERN ELECTRONICS [2] Dec 1989 (v.6#12) pg. 35

The fone sentry. Prevents your telephone from ringing for a preselected number of times (4 to 10) so that you will not be disturbed while sleeping.
MODERN ELECTRONICS [2] Jan 1990 (v.7#1) pg. 35

Fone mate. This computerized telephone accessory provides hold, recall, warble-tone ringing, 12- or 24-hour clock display and dialed-digit display function.
MODERN ELECTRONICS [2] Jul 1990 (v.7#7) pg. 22

Super tunes for telephones. Device gives your phone more answering appeal by playing a different melody (from a selection of 12) each time it rings.
MODERN ELECTRONICS [2] Sep 1990 (v.7#9) pg. 45

Circuit will be activated by either a telephone pickup or a dynamic microphone. It will turn on a light in response to a noise (like a telephone or alarm clock ringing). Useful for people with hearing disabilities.
POPULAR ELECTRONICS [1] Mar 1978 (v.13#3) pg. 86

Low-cost solid-state electronic ringer circuits can replace the electromechanical ringer in a telephone. Est. cost: $25.
POPULAR ELECTRONICS [1] May 1981 (v.19#5) pg. 70
Added Info POPULAR ELECTRONICS [1] Aug 1981 (v.19#8) pg. 7

Melodic telephone ringer. Design your own pleasant tune to replace the standard ring. Requires a direct connection to the telephone line.
POPULAR ELECTRONICS [1] Nov 1981 (v.19#11) pg. 57
Correction POPULAR ELECTRONICS [1] Feb 1982 (v.20#2) pg. 12

Add a distinctive extension tone ringer to your telephone line. Est. cost: $12.
POPULAR ELECTRONICS [1] Apr 1982 (v.20#4) pg. 56

Ringer relay is designed to flash a lamp (or other signaling device) in cadence with a telephone's in-coming ring signal.
POPULAR ELECTRONICS [2] Sep 1989 (v.6#9) pg. 27

Replace a telephone bell with a light by using this home-made optocoupler (optoisolator) to separate the telephone from the light circuit.
POPULAR ELECTRONICS [2] Mar 1990 (v.7#3) pg. 104

Phone flasher circuit will flash a light when your phone rings.
POPULAR ELECTRONICS [2] May 1990 (v.7#5) pg. 22

Phone-ring detector circuit allows you to change the number of rings that activates some device.
POPULAR ELECTRONICS [2] Jun 1991 (v.8#6) pg. 19

Remote ringer in a central location overcomes the problem of exceeding REN (ringer equivalency number) because of too many extension telephones.
POPULAR ELECTRONICS [2] Sep 1991 (v.8#9) pg. 22

Telephone ring converter alters the ringing sound of a telephone so you can distinguish it from any other phone in the same room.
POPULAR ELECTRONICS [2] Apr 1992 (v.9#4) pg. 38

Telephone circuit parade. (1) Neon lamp acts as a ring indicator. (2) Telephone recording control will activate a tape recorder any time the phone is taken off hook. (3) Telephone indicator (tester) will tell when a phone is off hook, the dialing method used, and which digit was pressed or dialed.
POPULAR ELECTRONICS [2] Aug 1992 (v.9#8) pg. 76, 88

Telephone circuits. (1) Circuit uses a light-dependent resistor to sense when a phone with a built-in flasher is ringing. (2) Two circuits will tell others when a telephone line is in use by lighting an LED. (3) Two circuits sense when a phone rings and activates a loud fire bell. (4) Extension ringer sounds a bell in a remote location.
POPULAR ELECTRONICS [2] Nov 1996 (v.13#11) pg. 64
Added Info POPULAR ELECTRONICS [2] Jan 1997 (v.14#1) pg. 6

Circuit for a telephone ring indicator which will drive a buzzer, light an LED, etc.
POPULAR ELECTRONICS [2] Dec 1997 (v.14#12) pg. 63

Circuit for a remote telephone alarm sounds a buzzer or Sonalert audible signal device whenever the telephone rings.
POPULAR ELECTRONICS [2] Jun 1998 (v.15#6) pg. 18

20-Hz generator circuit to test the ringer on old telephones.
POPULAR ELECTRONICS [2] Jul 1998 (v.15#7) pg. 16

Circuit to detect the ringing of a telephone and turn on an LED.
POPULAR ELECTRONICS [2] Jul 1998 (v.15#7) pg. 52

Plug-in remote ringer. Use your house wiring to send a signal to a remote ringing device whenever the phone rings.
RADIO-ELECTRONICS Nov 1977 (v.48#11) pg. 45

Circuit for a remote telephone ringer. Use it to trigger a bell or a light.
RADIO-ELECTRONICS Oct 1983 (v.54#10) pg. 56

Telephone ringer IC examined.
RADIO-ELECTRONICS Mar 1984 (v.55#3) pg. 88

Circuit for a musical telephone ringer which will play one of 28 tunes (as selected by the user). Incorporates General Instruments' AY-3-1350 melody-synthesizer IC powered by a 9-volt battery.
RADIO-ELECTRONICS Feb 1985 (v.56#2) pg. 90

Circuits for a telephone-ring detector that is used to light an LED, power an optocoupler, or power a piezotransducer.
RADIO-ELECTRONICS May 1988 (v.59#5) pg. 73

Explanation of ringer-equivalency number, plus a telephone ring detector which uses an optocoupler for safety isolation.
RADIO-ELECTRONICS Jul 1988 (v.59#7) pg. 72

Circuit of an electronic warbling telephone ringer to substitute for the conventional bell.
RADIO-ELECTRONICS Sep 1988 (v.59#9) pg. 12

Circuit for a dedicated telephone ringer that can be powered by the phone line or a battery.
RADIO-ELECTRONICS Jul 1990 (v.61#7) pg. 8
Added Info RADIO-ELECTRONICS Oct 1990 (v.61#10) pg. 14

Add a flashing light to your telephone bell.
SCIENCE & ELECTRONICS [1] Jun-Jul 1970 (v.28#3) pg. 47

Telechirp. Remote telephone ringer produces a low level chirp or warble instead of a clang or bong.
SCIENCE & ELECTRONICS [2] Mar-Apr 1981 (v.21#2) pg. 57

Build and install an inexpensive remote telephone bell.
SCIENCE & MECHANICS Spring 1979 pg. 89